It's an odd hypocrisy, things that demonstrate a lack of moral responsibility are tolerated when it comes to federal funding, but once there's a moral judgment to made on the subject, knee-jerk activists suddenly manufacturer some "church/state" issue. Decisions guided by the moral teachings of a church are not a violation of the 1st amendment.
So if you support federal funding of abortion, it's o.k.
but to oppose it is to be an exercise of your morality and an imposition of your religion, thus it's wrong and to be dismissed.
But that entire debate should be moot anyway. The federal government's authority should not extend into this arena. Where does the federal government get the right to spend money on issues such as this one? They've ceased that power and responsibility by reinterpreting what they like call a "living constitution."
Arguably, a local or state government could make that kind of decision, but the federal government does not- or at least shouldn't be able to.
...but specifically regarding your post, Planned Parenthood used to received about $50M a year from the federal government directly, and another $50M through Medicaid. I wouldn't be surprised to learn that the number has gone up in recent years.